______ 是Java程序的并发机制,它能同步共享数据,处理不同事件。
参考答案:多线程
I hurry to school on the first bus every morning, ______ do many school students and kids.[ ]
A. which
B. as
C. such
D. when
混凝土模板的拆模顺序是()。
A.后支先拆,先支后拆
B.后支后拆,先支先拆
C.先拆底模后拆侧模
D.先拆承重模后拆非承重模